u6 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. IX. 



Section 2. Upper mandible with more or less hook, but toes 



not armed with talons. See page 125. 

 Section 3. Tip of upper mandible not notched or hooked. See 



page 126. 



Part i. First primary less than half as long as third, some- 

 times very small. See page 126. 

 Part 2. First primary more than half as long as third. See 



page 128. 

 Group 5. Birds having wings over 9.50 inches long. See page 133. 



